JP2000202058A - Hose car lift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confirm an improper fixing of a hose car before a hose car mount is lifted in a lift equipped with a fixing device to lock the axle of the hose car mounted on the hose car mount. SOLUTION: The axle 201 of the hose car can be locked or released by the rotation of a loading ramp 5, when a hose car mount 3 is at the lowering end (the position where the hose car touches the ground), by structuring so as to operate a fixing device 6 to lock the axle 201 of the hose car 200, interlocking with the loading ramp 5, when it is rotated toward the storage position, by providing the loading ramp 5 that is rotatable between the position of use and the position of storage in the rear of the hose car mount 3 and connecting the loading ramp 5 and the fixing device 6 with a linking mechanism 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for loading and unloading a hose car on a vehicle such as a fire pump truck.

[0002]

2. Description of the Related Art In a hose car mounted on a fire pump truck, a connecting hose connected to a nozzle, a water supply port of the fire pump truck, or another hose is wound.

Conventionally, the loading and unloading of such a hose car to and from a fire pump truck has been performed manually, but recently, as shown in FIG.
01 is installed in many fire pump trucks 100. In this type of hose car lifting device, a device for fixing the hose car stored in the hose car mounting table 103 is provided.

[0004] As one example, Japanese Patent Application Laid-Open No. H10-16553 is disclosed.
No. 6 discloses an axle 201 of a hose car 200 stored in a hose car mounting table 103, as shown in FIG.
Receiving member 161, a fixing pin 162 for securing the axle 201, a tension coil spring 163 for urging the fixing pin 162 to the securing side, and a wire 10 at the rear end of the fixing pin 162.
4 and an electric cylinder (not shown) connected via the power cylinder 4. When the hose car mounting table 103 reaches a position below the position immediately before the lower end, the electric cylinder is driven (forward) to secure the fixing pin 162. It moves to the release side, and the hose car mounting table 10
A fixing device having a structure in which the electric cylinder is driven (retracted) to move the fixing pin 162 to the securing side when the position 3 reaches above the position immediately before the lower end is disclosed.

[0005]

According to the fixing device shown in FIG. 10, the position of the hose car mounting table at the time of elevating and lowering is detected by a detection switch (limit switch or the like).
Since the electric cylinder is driven, the electric cylinder is driven when the hose car mounting table moves up and down, regardless of whether the hose car is mounted at an appropriate position. Therefore, when the mounting position of the hose car is defective and the fixing pin is located at a position where it interferes with the axle of the hose car, the fixing pin may hit the axle even when the electric cylinder is driven, and the fixing pin may malfunction. If such a problem occurs, lower the hose car mounting table once, correct the position of the hose car and make it proper,
It is necessary to raise the hose car mounting table again to fix the hose car by the fixing device, and the operation is troublesome and takes much time.

In order to prevent such a problem in advance,
It is also conceivable to place a mark to confirm the position where the hose car is placed, and to check whether the placement position is appropriate when the hose car is placed. Each time it is placed, it is necessary to carry out confirmation work.

Incidentally, according to the fixing device shown in FIG.
At the time when the hose car mounting table reaches the lower end (at the time of touchdown), since the axle of the hose car has already been released, there is a risk that the hose car may run on its own if the fire pump car is parked uphill. There are also problems.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hose car lifting / lowering apparatus having a fixing device capable of confirming a securing failure of a hose car before raising the hose car mounting table. And

[0009]

In order to achieve the above object, a hose car lifting device according to the present invention includes a hose car mounting table provided at a rear portion of a vehicle, a driving device for moving the hose car mounting table up and down, and a hose car mounting apparatus. In an elevating device having a fixing device for securing an axle, a road plate that is rotatable between a use position and a storage position is provided at an end of a hose car mounting table, and the road plate is fixed to the road plate. The device is connected by a link mechanism, and when the road plate is turned toward the stowed position, the fixing device is operated in conjunction with this to lock the axle of the hose car. It is characterized by:

In the hose car lifting device according to the present invention, as a specific example of a fixing device for securing the axle of the hose car, a device having a fixing pin that operates in conjunction with the turning operation of the road plate can be mentioned. .

[0011] In the hose car lifting device according to the present invention, as a link mechanism for connecting the road plate and the fixing device, a bell crank fixed to a support shaft of a rotary road plate, and a compression link connected to the bell crank. It is preferable to use a mechanism configured such that the connection point between the bell crank and the compression link is located at a point exceeding the rotational dead center of the bell crank when the road plate is in the retracted position. . The point beyond the rotational dead center of the bell crank includes the case where the connection point between the bell crank and the compression link is located at the rotational dead center.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, an elevator device L according to the present embodiment includes an outer frame 1 installed at a rear portion (see FIG. 10) of a fire pump truck 100, and An inner frame 2 slidably provided in a vertical direction, a hose car mounting table 3 provided at a lower end of the inner frame 2, a driving device 4 for vertically moving the inner frame 2 and moving the hose car mounting table 3 up and down. It is configured as a subject. The driving device 4 includes a hydraulic cylinder 41, a roller chain 42 and a sprocket 4
3 and its hydraulic cylinder 41
Is controlled by an operation switch (not shown) installed in the fire pump truck 100.

As shown in FIGS. 3 and 4, both ends of the front side of the hose car mounting table 3 (the rear side of the fire pump truck) are provided.
A pair of right and left road plates (flaps) 5 are provided. The road plate 5 is rotatably supported by the hose car mounting table 3 by a support shaft 51 fixed to each end thereof and a bearing 31 provided on the hose car mounting table 3. One end of the support shaft 51 of the road plate 5 protrudes outward from the bearing 31, and a bell crank 71 of the link mechanism 7, which will be described later, is fixed to the protruding portion (see FIG. 5).

The hose car mounting table 3 has a hose car 20
A pair of left and right fixing devices 6 for fixing 0 are installed.
The fixing device 6 is, as shown in FIGS.
00, a receiving member 61 provided with a locking recess 61a for receiving the axle 201, and an axle 2 inserted into the locking recess 61a.
And a fixing pin 62 for securing the fixing pin 01.

The receiving member 61 is provided on a box 60 fixed to the hose car mounting table 3. Fixing pin 62
Is movable vertically with respect to the receiving member 61, and the lower end thereof is connected to the tip of a bell crank 63 (disposed in the box 60). The rotating shaft 64 of the bell crank 63 projects outside the box 60, and the bell crank 65 is fixed to the projecting end. A link rod 74 of a link mechanism 7 described below is connected to the external Berg crank 65, and the rotation of the Berg crank 65 provided by the link mechanism 7 causes the fixing pin 62 to move up and down.
The upper end moves to a position where it projects into the locking recess 61a of the receiving member 61 (latch position) and a position below the locking recess 61a (latch release position).

In the fixing device 6 described above, a tension coil spring 75 is provided between the bell crank 65 and the hose car mounting table 3. This tension coil spring 75
The role of pressing the fixing pin 62 toward the protruding side (the securing position side) and the role of assisting the operation force when rotating the road plate 5 to the storage position are performed.

The link mechanism 7 has a bell crank 71 fixed to the support shaft 51 of the road plate 5, as shown in FIGS.
And a support shaft 32 provided on the side of the hose car mounting table 3.
Crank 73, which is rotatably supported on the shaft, a compression link 72 interconnecting one end of the connection crank 73 and the bell crank 71 on the side of the road plate 5, and a link connected to the other end of the connection crank 73. It is constituted by a rod 74, and a bell crank 65 of the fixing device 6 is connected to an end of the link rod 74.

In the above structure, when the road plate 5 is turned from the use position to the storage position (the upright posture shown in FIG. 1), the link rod 74 is pulled and the fixing device 6 is pulled.
The bell crank 65 rotates, and the fixing pin 6
2 is raised, and the upper end thereof is
And the fixing pin 62 is locked. In this locked state, the connection point between the bell crank 71 of the link mechanism 7 and one end of the compression link 72 (the center of the connection shaft 71a)
Is the rotation center of the bell crank 71 (the center of the support shaft 51)
On the line connecting the other end of the compression link 72 and the connection point of the connection crank 73 (the center of the connection shaft 72a) (rotation dead center)
Located in.

On the other hand, when the road plate 5 is turned from the storage position described above toward the use position, the link rod 74 is pushed, and the bell crank 65 of the fixing device 6 is turned in the opposite direction to the previous position. As a result, the fixing pin 62 is lowered, and the upper end thereof is positioned below the locking concave portion 61a of the receiving member 61 (lock release).

In this embodiment, in addition to the above configuration, in the present embodiment, when the road plate 5 is placed at the storage position, the hook 8 and the lock device 9 for holding the road plate 5 at that position are mounted on the hose car. It is provided on the table 3.

As shown in FIG. 5, the hook 8 is rotatably supported by a support shaft 33 provided on the hose car mounting table 3, and is engaged with the locking projection of the road plate 5 in the storage position (standing state). A notch 8a shaped to be hooked on 5a is provided.
A tension coil spring 81 is attached to the hook 8, and a rotational force directed downward (toward the holding position) is applied by the tension coil spring 81.

As shown in FIGS. 8 and 9, the lock device 9 includes a pair of left and right lock pins 91 and a compression coil spring 92.
The lock mechanism 90 includes a connecting crank 93 and a drive rod 94, and a motor 95 (with a bell crank) that gives the drive rod 94 of the lock mechanism 90 forward and backward movements. Locked state)
Then, when the motor 95 is driven to retract the drive rod 94 (in the direction of the arrow in the figure), the connecting crank 93 of the lock mechanism 90 rotates, and each lock pin 91 moves in the release direction. When the motor 95 is driven in the reverse direction from the release state to advance the drive rod 94 from the released state, the lock pin 91 is configured to protrude by the elastic force of the compression coil spring 92, and the lock pin 91 is protruded. The rotation of the road plate 5 can be restricted by the protruding portions.

In the lock device 9 described above, the motor 95
Is set so as to be driven while the hose car mounting table 3 of the elevating device L moves up and down. When the hose car mounting table 3 moves up, the motor 95 rotates in the direction in which the lock pin 91 is protruded, and the road plate 5 When the hose car mounting table 3 descends, the rotation of the lock pin 91 is reversed.
To unlock the road plate 5. In addition, the lock device 9
Is provided with a manual release handle 96 used when the motor 95 or the like breaks down.
Is operated against the elastic force of the compression coil spring 92, the lock of the road plate 5 by the lock pin 91 can be released.

In the lifting device L having the above structure,
Although not shown, a mounting table fixing device that secures the inner frame 2 to the outer frame 1 when the hose car mounting table 3 moves to the rising end is provided.

Next, the loading / unloading operation of the hose car will be described below. First, when loading the hose car 200 on the fire pump truck, the hose car mounting table 3 of the lifting / lowering device L is lowered to the lower end, and then the road plates 5 at both front ends of the hose car mounting table 3 are manually turned to the use position side. Move.
By this rotation operation, the upper end of the fixing pin 62 of the fixing device 6 is positioned below the locking concave portion 61a of the receiving member 61 (unlocking). The lock pin 91 of the lock device 9 for restricting the rotation of the road plate 5 is also retracted to the unlock position.

Next, in a state where the wheels 202 of the hose car 200 are respectively aligned with the road plate 5, the hose car 200 is pushed onto the hose car mounting table 3 and the axle 20
1 at both ends of the locking recesses 61a of the left and right fixing devices 6, respectively.
Then, each road plate 5 is rotated from the use position to the storage position.

At this time, if the mounting position of the hose car 200 is not good and the axle 201 is in a position where it interferes with the fixing pin 62 of the fixing device 6, the upper end of the fixing pin 62 is Impinges on the axle 201, so that the turning operation of the road plate 5 becomes impossible. Therefore, at this time, that is, before performing the raising operation of the hose car mounting table 3, it is possible to confirm the improper mounting of the hose car 200.
The zero is reset so that the axle 201 enters the proper position. In addition, since such a position correction can be performed in a state where the hose car mounting table 3 is disposed at the lower end (the ground contact position), the operation can be performed quickly and easily.

If the road plate 5 can be turned to the storage position (standing posture) with the axle 201 of the hose car 200 inserted in the locking recess 61a of the fixing device 6, it is determined that the storage is normal and each road is After the hook 8 is hooked on the plate 5, the driving device 4 of the lifting / lowering device L is driven to raise the hose car mounting table 3. During this ascent, the lock pin 91 of the lock device 9 protrudes, the rotation of the road plate 5 is locked, and when the hose car mounting base 3 reaches the rising end, the hose car mounting base 3 is fixed to that position.

As described above, in the present embodiment, the rotation of the road plate 5 at the storage position is restricted by the double lock by the hook 8 and the lock pin 91 of the lock device 9, so that the load during traveling can be reduced. Even if (the vibration or the like) is applied to the road plate 5, it is possible to reliably prevent the road plate 5 from moving (turning) from the storage position. Moreover, when the road plate 5 is in the retracted position, the connection point between the bell crank 71 and the compression link 72 of the link mechanism 7 is located at the rotation dead center as described above.
Even when the fixing pin 62 of the fixing device 6 is pushed downward (unlocking side) during traveling, the link mechanism 7 does not move and the axle 201 of the hose car 200 does not come off from the fixing device 6. In addition, since the link mechanism 7 of the present embodiment has a structure in which the fixing pin 62 is projected to the securing position by a tension method, there is also an advantage that the fixing force of the hose car 200 against the hose car 200 is strong.

On the other hand, when removing the hose car 200 from the fire pump truck, first, the securing of the hose car mounting table 3 of the lifting device L is released, and the hose car mounting table 3 is lowered to the lower end. At this point, the axle 20 of the hose car 200
Since the lashing by the first fixing device 6 is held, the hose car 200 does not run by itself even when, for example, the fire pump car is parked uphill. At the time when the hose car mounting table 3 is lowered to the lower end, the lock of the road plate 5 by the lock device 9 is released.

Next, after the hook 8 is pulled up to unlock the road plate 5, the road plate 5 is turned toward the use position. With this operation, the fixing pin 62 of the fixing device 6 is lowered, and the axle 20 of the hose car 200 is moved by the fixing pin 62.
1 is released, and the hose car 200 is in a free state. And the hand of the horse car 200 (not shown)
With the wheels 202 aligned with the road plate 5, the hose car 200 is pulled out to the rear side of the fire pump truck. At this time, even if the place where the fire-fighting pump car is parked is, for example, on uneven or sloping ground, and a step is generated between the hose car mounting table 3 and the ground contact surface, the step should be covered by the road plate 5. Therefore, the loading / unloading operation of the hose car 200 can be easily performed.

[0033]

As described above, according to the hose car lifting / lowering apparatus of the present invention, the end of the hose car mounting table is provided with a road plate rotatable between the use position and the storage position. The plate and the fixing device are connected by a link mechanism, and when the road plate is turned toward the stowed position, the fixing device is operated in conjunction with this to fix the axle of the hose car. Therefore, the hose car can be fixed / released when the hose car mounting table is at the lower end (horse car ground contact position). Therefore, if there is a mounting failure when loading the hose car, the failure can be known before raising the hose car mounting table. Further, since the placement failure is found at the time of ground contact, the position of the hose car can be quickly corrected.

In addition, since the fixing device operates in conjunction with the turning operation of the storage position of the road plate, it is possible to confirm whether or not the securing of the axle of the hose car is proper by checking whether the road plate is in the storage position. . Therefore, problems such as forgetting to operate the fixing device and insufficient securing of the axle of the hose car can be prevented.

Further, according to the hose car lifting device of the present invention, since the rotatable road plate is provided on the hose car mounting table, the place where the fire pump car or the like is parked is on uneven or sloping ground. Even if there is a step between the table and the grounding surface, the loading / unloading operation of the hose car can be easily performed.

Here, in the hose car lifting device according to the present invention, as a link mechanism for operating the fixing device, a bell crank fixed to a support shaft of a rotary road plate and a compression link connected to the bell crank are provided. If the connecting point between the bell crank and the compression link is located at a point beyond the rotational dead center of the bell crank when the road plate is in the retracted position, the fixing device is used during traveling. Even if the fixing pin or the like is pushed toward the securing release side, the link mechanism does not move, so that the hose car can be more securely fixed.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment of the present invention.

FIG. 3 is a side view of a hose car mounting table applied to the embodiment of the present invention.

FIG. 4 is a plan view of a main part of the hose car mounting table.

FIG. 5 is a side view showing a configuration of a fixing device and a link mechanism applied to the embodiment of the present invention.

FIG. 6 is a plan view showing the configurations of a fixing device and a link mechanism.

FIG. 7 is a sectional view taken along line AA of FIG. 5;

FIG. 8 is a plan view showing a configuration of a lock device applied to the embodiment of the present invention.

FIG. 9 is a front view showing the configuration of the lock device.

FIG. 10 is a diagram schematically illustrating an example of a hose car lifting device.

[Explanation of symbols]

 L Lifting device 1 Outer frame 2 Inner frame 3 Hose car mounting table 31 Bearing 32 Support shaft 4 Drive device 41 Hydraulic cylinder 42 Roller chain 43 Sprocket 5 Road plate 51 Support shaft 6 Fixing device 60 Box 61 Receiving member 61a Locking recess 62 Fixing pin 63 bell crank 64 rotating shaft 65 bell crank 7 link mechanism 71 bell crank 72 compression link 73 connecting crank 74 link rod 75 tension coil spring 8 hook 9 locking device (for road plate) 90 locking mechanism 100 fire pump car 200 hose car 201 axle

Claims (2)

[Claims] 1. An elevator device comprising a hose car mounting table provided at a rear part of a vehicle, a driving device for elevating and lowering the hose car mounting table, and a fixing device for securing an axle of the hose car, wherein an end of the hose car mounting table is provided. In addition, a road plate that is rotatable between a use position and a storage position is provided,
The road plate and the fixing device are connected by a link mechanism, and when the road plate is turned toward the stowed position, the fixing device is operated in conjunction with this to lock the axle of the hose car. A hose car elevating device, characterized in that it is configured as follows. 2. A link mechanism includes a bell crank fixed to a support shaft of a rotary road plate and a compression link connected to the bell crank. 2. The hose car lifting / lowering device according to claim 1, wherein the connecting point is configured to be located at a point exceeding the rotational dead center of the bell crank when the road plate is in the retracted position.